package com.hmall.item.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmall.item.mapper.ItemMapper;
import com.hmall.item.pojo.Item;
import com.hmall.item.service.IItemService;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class ItemService extends ServiceImpl<ItemMapper, Item> implements IItemService {

    private ItemMapper itemMapper;

    @Autowired
    private RabbitTemplate rabbitTemplate;

    //商品的上架和下架实现
    @Transactional
    @Override
    public void updateStatus(Long id, Integer status) {
        this.update().set("status",status).eq("id",id).update();
        //根据上下架判断RoutingKey
        String routingKey = status == 1 ? "item.up" : "item.down";
        //发送消息到rabbit中实现数据同步
        rabbitTemplate.convertAndSend("item.topic",routingKey,id);
    }



}
